JP2008031720A - Airtight heat insulation structure of beam - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an airtight heat insulation structure of a beam, which facilitates mounting work on the beam, and ensures positive airtightness even at a seam of heat insulation materials. <P>SOLUTION: The airtight heat insulation structure of the beam has a long heat insulation material 10 and an urging member 11. The long heat insulation material 10 has collar portions 10a which are squeezed into a space having a cross section defined by upper and lower flanges 1a, 1b, and a web 1c of the beam 1, and cover flange headers 1d, 1e of the beam 1, formed on both upper and lower edges of the same; and a fitting portion 10b fitted into the space between the upper and lower flanges of the beam. The urging member 11 penetrates the heat insulation material 10 in a direction at right angles to the web 1c, and has its front end engage with a hole 1f formed in the web 1c, to thereby urge the heat insulation material 10 toward the web 1c. Thus by facing the heat insulation material 10 to the beam 1 to cover the flange headers 1d, 1e with the collar portions 10a, fitting the fitting portion 10b into the space between the upper and lower flanges 1a, 1b, and penetrating the energizing member 11 to engage with the hole 1f formed in the web 1c, the collar portions 10a are press-contacted to the flange headers 1d, 1e, to thereby hold the airtightness of the beam. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a hermetic heat insulating structure of a beam in which a long heat insulating material is fitted between upper and lower flanges of the beam and pressed against a flange edge, and an outer wall structure using the airtight heat insulating structure.

  It has been practiced to provide a heat insulating structure by installing a heat insulating material in a cross-sectional space made up of upper and lower flanges of a beam and a web arranged on the outer periphery constituting a frame of a steel structure building. In particular, from the viewpoint of preventing condensation in the beam portion, it may be desirable to install a heat insulating material on the surface of the outer peripheral beam on the outside air side. For this reason, as the frame construction progresses, heat insulation is added to the end faces (small openings) of the upper and lower flanges on the outside of the outer peripheral beam, and between the flange surface of the beam and adjacent to each other using an airtight tape. It is common to stick a joint between heat insulating materials.

  In addition, when the heat insulating material is a foam having elasticity, the applicant of the present application has proposed a technique for constructing a cross-sectional space using the elasticity of the heat insulating material (see Patent Document 1). This technology is made of polyethylene foam, and prepares a plate-like heat insulating material that includes a cover portion that covers the end faces of the upper and lower flanges, and a fitting portion that fits between the upper and lower flanges. Is fitted between the upper and lower flanges by pushing them together, and the end faces of the upper and lower flanges are covered with a cover to exhibit heat insulation. In this technique, the heat insulating material is fitted between the upper and lower flanges by the elasticity of the heat insulating material and is self-held, so that it is easy to construct and can exhibit reliable heat insulating performance.

Japanese Patent Laid-Open No. 11-172801

  To construct a heat insulating material on the outside air side of a beam arranged on the outer periphery of a steel structure building, it is necessary to be able to perform the construction during the steel construction. In this case, it is also necessary to assume construction work in rainy weather, and in a construction method using a conventional airtight tape, adhesive, etc., there is a possibility that the adhesive force may be reduced or changed by water droplets and stable quality cannot be maintained. .

  Moreover, in the case of the technique described in Patent Document 1, since it is a simple operation of fitting the heat insulating material between the upper and lower flanges of the beam, it is advantageous that a skeleton work can be performed as the steel work progresses. However, since it is self-maintained only by the elasticity that the heat insulating material itself has, there is a risk of lack of long-term reliability.

  In addition, the quality of the work of the carpenter is often less dense than the quality of the work of the carpenter, and in particular, it is possible to achieve high airtightness even without careful attention to the clearance of the joints of the insulation material. It is desired to develop such a structure.

  An object of the present invention is to adopt a hermetic heat insulating structure of a beam, which can easily install a heat insulating material having airtightness to the beam and can ensure reliable airtightness even at the joint of the heat insulating material, and this airtight heat insulating structure. Another object of the present invention is to provide an airtight outer wall structure.

  In order to solve the above problems, an airtight heat insulating structure of a beam according to the present invention is an airtight heat insulating structure for airtightness and heat insulation on one side of a web of a steel beam having an upper and lower flange and a web, and includes an upper flange and a web of the beam. A long portion having a flange portion that covers the flange edge of the beam formed at the end of the upper and lower flanges and a fitting portion that is fitted between the upper and lower flanges of the beam formed between the flange portions. An airtight heat insulating material, attached to the heat insulating material, penetrates the heat insulating material in a direction perpendicular to the web, and the tip is locked in a hole formed in the web of the beam to attach the heat insulating material to the web side. An urging member for energizing, the flange is covered with a flange with the heat insulating material facing the beam, and a fitting portion is fitted between the upper and lower flanges. Force member through The flange portion of the heat insulating member is pressed against the respective flanges small beams by locking the distal end of the biasing member to the web of the hole with it is to hold the airtightness.

  In the above-mentioned hermetic heat insulating structure of the beam, a planar and elastic airtight material is arranged between the beam corresponding to the joint portion in the longitudinal direction of the heat insulating material, and the heat insulating material is opposed to the airtight material. It is preferable that the airtight material having a planar shape and elasticity corresponding to the joint portion in the length direction of the heat insulating material has a shape corresponding to the shape of the upper and lower flanges of the beam and the web. More preferably, a holding member is interposed.

  Further, in any one of the above-mentioned hermetic heat insulating structures of the beam, the thickness of the fitting portion of the heat insulating material is a value that can press the airtight material and the holding member when the heat insulating material is pressed against the beam. In addition, it is preferable that a notch or a mounting hole for penetrating the urging member is formed at a position facing the hole formed in the web of the heat insulating material beam.

  An airtight heat insulating outer wall structure according to the present invention is an airtight heat insulating outer wall structure that selectively employs one of the above-mentioned airtight heat insulating structures of the beam, and the heat insulating material is provided on the surface on the outdoor side of the beam. is there.

  In the airtight heat insulating structure of the beam according to the present invention, the heat insulating material having a gas tightness is configured in a long shape having a flange portion that covers the upper and lower flange edges of the beam and a fitting portion that is fitted between the upper and lower flanges. In addition, by urging the heat insulating material toward the web side by the urging member, the flange portion of the heat insulating material can be pressed against each flange edge. For this reason, a heat insulating material can be constructed between the upper and lower flanges of the beam to exhibit airtightness and heat insulating properties.

  In particular, since the heat insulating material is mechanically attached by a biasing member that penetrates the heat insulating material in a direction perpendicular to the web and is locked in a hole formed in the web, high reliability for long-term attachment Can demonstrate its sexuality.

  In addition, an air-tight material is arranged corresponding to the joint portion in the length direction of the heat insulating material, and by placing the heat insulating material in pressure contact with the air-tight material, there is a slight gap in the seam of the heat insulating material installed along the beam. Even if it occurs, this gap can be shielded by an airtight material. For this reason, even when construction that is somewhat lacking in denseness is performed, the airtightness is not impaired, and high heat insulating properties and airtightness can be reliably ensured.

  In particular, by interposing a holding member having a shape corresponding to the shape of the upper and lower flanges of the beam and the web of the airtight material, it is possible to ensure the airtightness of the heat insulating space composed of the upper and lower flanges of the beam and the web. In addition, it is possible to ensure heat insulation and airtightness of the surface on the outside air side of the beam.

  Furthermore, when the thickness of the fitting portion in the heat insulating material is such that the heat insulating material can be pressed against the airtight material when the heat insulating material is pressed against the beam, more reliable airtightness can be exhibited.

  In addition, a notch or mounting hole for penetrating the biasing member was formed at a position opposite to the hole formed in the web of the beam in the heat insulating material, so that the flange edge was covered with the flange portion of the heat insulating material. Sometimes the notch or mounting hole faces the hole in the web. For this reason, when the urging member is inserted into the notch or the mounting hole, the urging member can be reliably fitted into the hole of the web.

  As described above, in the airtight heat insulating structure of the beam of the present invention, high airtightness and heat insulating properties can be reliably ensured by simple construction.

  Moreover, in the airtight heat insulating outer wall structure according to the present invention, since the heat insulating material is provided on the outdoor side (outside air side) of the outer peripheral beam of the steel structure building, the heat insulating property of the building can be improved and the air tightness can be secured. . In particular, since the heat insulating material is mechanically installed on the beam, reliability can be ensured.

  Hereinafter, a preferred embodiment of a hermetic heat insulating structure for beams according to the present invention will be described. The hermetic heat-insulating structure of the beam according to the present invention is capable of ensuring the heat-insulating property of the heat-insulating space composed of the upper and lower flanges of the beam and the web constituting the frame of the steel building and the air-tightness.

  In the present invention, the beam is made of an H-shaped steel made up of upper and lower flanges and a web. The size and dimension of the H-section steel are not limited, and any shape can be used as long as it is used for a normal steel frame building. In such an H-shaped steel, holes for inserting bolts are provided in the upper and lower flanges and the web in advance at positions corresponding to the module dimensions set in the building, or at a plurality of positions around the position. In the present invention, it is preferable to use such an H-shaped steel as a beam.

  In the present invention, the material is not particularly limited as a heat-insulating material having airtightness, and any plate-shaped heat insulating material can be used. However, in the present invention, since the heat insulating material is urged at right angles to the web direction of the beam by the urging member and brought into pressure contact with each flange edge, it is preferable to have an appropriate elasticity. As such a heat insulating material, it is possible to use a foam made of a polyethylene-based resin having elasticity.

  Moreover, although it is inferior in elasticity, it is also possible to use a hard plastic-based heat insulating material including a molded body such as rigid urethane foam, extruded foamed polystyrene, or phenolic resin foam, or a foam.

  The heat insulating material in the present invention uses a plate-shaped heat insulating material selected from the heat insulating materials having the above-mentioned materials, and the width dimension that is the dimension between both ends of the flanges is between the surfaces of the upper and lower flanges. It is only necessary that the length is substantially equal to or slightly larger than the length of the material and the length is equal to the length of the heat insulating material. On both sides of the heat insulating material in the width direction, flanges having a dimension substantially equal to the thickness of the upper and lower flanges are formed, and a fitting part that fits between the upper and lower flanges is formed between the flanges. Therefore, the heat insulating material has a substantially convex cross-sectional shape.

  The heat insulating material is formed with a notch or a mounting hole for allowing the biasing member to pass through at a position facing the hole formed in the web of the beam. This cut or mounting hole is preferably formed with an optimum shape and size corresponding to the shape and size of the biasing member. In particular, when the urging member that attaches the heat insulating material to the beam penetrates the heat insulating material, it is not preferable that a gap be formed between the heat insulating material and the urging member. For this reason, it is preferable that the dimensional tolerance between the mounting hole and the biasing member is as small as possible.

  As described above, a notch or mounting hole (hereinafter referred to as “notch”) is formed in the heat insulating material, so that it can be securely attached by a simple operation of inserting a biasing member into the notch. The urging member can be inserted into a hole provided in the web of the beam, whereby the heat insulating material can be pressed against the beam.

  The urging member has a function of urging the heat insulating material in the web direction by penetrating the heat insulating material in a direction perpendicular to the web and being locked in a hole formed in the web. Therefore, the shape is not limited as long as this function can be exhibited.

  As such an urging member, there are a penetrating portion that penetrates the heat insulating material, an engaging portion that is formed on the tip side of the penetrating portion and is engaged with a hole formed in the web, and the engaging portion is a hole in the web. It is preferable to have an urging portion that urges the heat insulating material when formed into a pin shape, and it is preferable that the respective portions are formed in a pin shape.

  For example, the penetrating portion can be configured to have a circular or flat cross section, and the locking portion can be elastically deformed when passing through a hole in the web while forming a claw or flange on the outer peripheral portion. It can be configured in a fork shape, and the urging portion can be configured in a flange shape that can come into contact with the heat insulating material over a wide area.

  In particular, by forming the urging portion in a disk shape having a large area, the contact area with the heat insulating material is increased, and more reliable airtightness can be ensured. In order to exhibit higher airtightness, it is preferable to arrange an airtight packing between the urging portion and the heat insulating material.

  In the urging member as described above, after the locking portion is passed through the hole in the web, a spring is interposed between the locking portion and the web so that the flange portion of the heat insulating material is pressed against the upper and lower flange edge. It can be energized. Further, the distance from the claw of the locking portion to the flange-shaped biasing portion is such that when the locking portion of the biasing member is passed through the hole of the web and locked, the heat insulating material is passed through the biasing portion. It is preferable that the force be applied so that the flange portion of the heat insulating material can be pressed into contact with the upper and lower flange ends of the beam by this force.

  The airtight material placed at the seam portion of the heat insulating material has a function of reliably shielding gaps that may occur at the seam when the heat insulating material is continued in the longitudinal direction, and has an appropriate elasticity and width dimension. A sheet-like material having Such a material is not particularly limited, and an adhesive sheet having airtightness can be used.

  The holding member holds the hermetic material and has a function of blocking a cross-sectional space formed by the upper and lower flanges of the beam and the web when the heat insulating material is pressed against the hermetic material. For this reason, any holding member having the above-described function can be used. In particular, the holding member has a U-shaped cross section composed of opposing surfaces of the upper and lower flanges and a web surface continuous with these surfaces, and the seam when the heat insulating material is continuous in the longitudinal direction. It is preferable to have a width dimension that can reliably block a gap that may occur.

  Moreover, it is preferable that a holding member has heat insulation. Thus, it becomes possible to supplement the heat insulation of the gap | interval which may arise in the joint of the length direction of a heat insulating material because a holding member has heat insulation.

  As described above, by using the airtight material or the airtight material held by the holding member, there is a case where a slight gap is generated in the longitudinal seam of the heat insulating material attached so as to cover the upper and lower flange edges of the beam. However, it is possible to shield the gap and exhibit good airtightness.

  Next, a hermetic heat insulating structure for beams according to the present embodiment will be described with reference to the drawings. FIG. 1 is a view for explaining the hermetic heat insulating structure of beams arranged on the outer periphery and the structure of the hermetic heat insulating outer wall structure. FIG. 2 is a development view illustrating the hermetic heat insulating structure of the beam. FIG. 3 is a front view of the heat insulating material. FIG. 4 is a side view of the heat insulating material. FIG. 5 is a diagram illustrating the configuration of the urging member. FIG. 6 is a diagram illustrating the configuration of the airtight member and the holding member.

  In the airtight heat insulating structure of a beam according to the present embodiment, a long heat insulating material 10 is arranged on the surface of the beam 1 arranged on the outer periphery of the steel building (the side on which the outer wall panel 2 is arranged). The urging member 11 is passed through the heat insulating material 10 in a direction perpendicular to the web 1c of the beam 1 and is locked to the web 1c to ensure airtightness and heat insulation. is there.

  In particular, when the long heat insulating material 10 is continued in the longitudinal direction, the holding member 13 holding the airtight material 12 is arranged at the joint, and the heat insulating material 10 is pressed against the airtight material 12 to thereby insulate the heat. Even when a gap is generated at the joint between the materials 10, it is possible to ensure airtightness reliably.

  The beam 1 disposed on the outer periphery of the steel building is configured as an H-shaped steel made up of an upper flange 1a, a lower flange 1b, and a web 1c. At the end of each flange 1a, 1b, a flange corresponding to the thickness is formed. The foreheads 1d and 1e are configured. Further, a plurality of holes 1f are formed in the web 1c at a pitch corresponding to a module dimension (305 mm in this embodiment) set in a building with a column core (not shown) as a reference.

  The heat insulating material 10 uses a foam made of a polyethylene-based resin having appropriate elasticity. This heat insulating material 10 has a thickness set in accordance with a width dimension substantially equal to or slightly larger than the height of the beam 1, a length that is an integral multiple of the module dimension, and the dimension from the flange edge 1 d to the web 1 c of the beam 1. Is formed.

  On both sides of the heat insulating material 10 in the width direction, the flanges 1d and 1e of the beam 1 are opposed to the upper and lower flanges 1d and 1e, and the flanges 1d and 1e are pressed against the flanges 1d and 1e by an urging force to exert airtightness. A flange portion 10a is formed, and a fitting portion 10b that fits between the upper and lower flanges 1a and 1b is formed between the flange portions 10a.

  The thickness of the flange portion 10a is not particularly limited, but it is necessary that the flange portion 10a has a dimension capable of exhibiting high heat insulation when the flange portion 10a is pressed against each flange edge 1d, 1e of the beam 1. It is. Therefore, it is preferable that the thickness of the flange portion 10a is appropriately set according to conditions such as the material of the heat insulating material 10.

  The fitting portion 10b has such a width that it can be smoothly fitted between the upper and lower flanges 1a, 1b of the beam 1. In particular, when a plurality of heat insulating materials 10 are continuous in the longitudinal direction, since the holding member 13 holding the airtight material 12 corresponding to the joint portion of the adjacent heat insulating material 10 is disposed, the fitting portion 10b It is formed with a shape that can come into contact with the airtight material 12 from both end surfaces in the width direction to the surface facing the web 1c. That is, a contact surface 10c with the airtight material 12 is formed in the fitting portion 10b from the both end surfaces in the width direction to the surface facing the web 1c.

  The contact surface 10c formed on the heat insulating material 10 is formed such that the end surface continuous to the fitting portion 10b has almost no inclination with respect to the surface facing the web 1c, as shown in FIG. Alternatively, as shown in FIG. 5B, the surface may be formed as a sloped surface inclined to the surface facing the web 1c.

  In addition, a plurality of cuts 10d (cuts or mounting holes) are formed at a pitch approximately equal to the module size set in the building at approximately the center in the width direction of the heat insulating material. This notch 10d is formed with a shape corresponding to the shape of the urging member 11, and when the urging member 11 passes through the notch 10d, a gap may be formed between the urging member 11 and the notch 10d. Absent. Further, in the case where 10d is formed as a mounting hole, the mounting member 11 has a dimension such that when the holding member 11 is penetrated through the mounting hole, a gap is not generated as much as possible between the penetrating member 11.

  When the urging member 11 passes through the notch 10d formed in the heat insulating material 10 and is locked in the hole 1f formed in the web 1c of the beam 1, the urging member 11 urges the heat insulating material 10 toward the beam 1 side. It has a function of pressing the flange portion 10a to the flange edge 1d, 1e.

  For this reason, the urging member 11 includes a penetrating portion 11a formed in a thin plate shape having a rectangular cross section, and a locking portion 11b formed in a bifurcated shape (fork shape) at one end of the penetrating portion 11a. And an urging portion 11c formed in a hook shape at the other end of the penetrating portion 11a.

  The locking part 11b is formed by a locking piece 11d formed by dividing the end of the penetrating part 11a into a bifurcated shape and a hook 11e formed on the outside of the locking piece 11d. In the locking portion 11b having such a shape, the locking piece 11d has a spring property, and the locking piece 11d is formed in the hole 10d formed in the heat insulating material 10 or the web 1c of the beam 1. When passing through the holes 1f, they approach each other, and after passing through these holes 10d and 1f, they return to their original shapes and are locked to the edges of the holes 1f by hooks 11e.

  The urging portion 11 c is a portion that transmits the urging force that acts when the urging member 11 is brought into contact with the outer surface of the heat insulating material 10 and is locked in the hole 1 f provided in the web 1 c of the beam 1. For this reason, it is necessary to have an area where the surface pressure does not become excessive, and a shape that does not protrude greatly from the outer surface of the heat insulating material when it contacts the heat insulating material 10. Is formed. In the present embodiment, the urging portion 11c is formed in a thin plate shape that is rectangular in plan view.

  The urging member 11 having the shape as described above is not particularly limited in material, and can be composed of metal or synthetic resin. However, in view of ease of securing the quantity and cost, injection by synthetic resin is possible. A molded product is preferred. In this case, polypropylene, vinyl chloride or the like can be used as the material.

  In the urging member 11, the dimension from the base of the hook 11 e formed on the locking portion 11 c to the base of the urging portion 11 c (the length of the penetrating portion 11 a) is the web of the flanges 1 a and 1 b in the beam 1. It is formed to have a dimension smaller than a dimension (attachment length) obtained by adding the length from 1c, the thickness of the web 1c, and the thickness of the flange portion 10a of the heat insulating material 10.

The difference between the mounting length and the length of the penetrating portion 11a is not particularly limited, and is preferably set in consideration of the elasticity and the like of the heat insulating material 10. According to the knowledge of the inventors of the present invention, when the heat insulating material is made of polyethylene foam, the length of the penetrating portion 11a is made smaller by about 5 mm to 10 mm than the mounting length, so that the flange portion 10a is made up of the upper and lower flanges 1a, It is possible to ensure airtightness by pressing the flanges 1d and 1e of the flange 1b.

  Further, the urging member is not limited to the shape of this embodiment. For example, the cross section of the penetrating portion may be formed in a circular shape or a cross shape. The locking portion may be a mushroom shape in which disks having different diameters are stacked and the tip side is configured to have a smaller diameter, or may be formed in a spiral shape. Further, the urging portion may be disk-shaped and may have a different diameter including an ellipse. In short, the urging member may be any shape as long as it can apply the urging force toward the web 1c to the heat insulating material 10 when the urging member is locked to the web 1c of the beam 1.

  The hermetic material 12 is an airtight material having moderate elasticity, and preferably has a width dimension sufficiently larger than a gap expected to be formed at the joint portion of the heat insulating material 10. If these conditions are satisfied, the material is not questioned, and a conventionally used airtight material can be used.

  In this embodiment, an airtight material having elasticity and adhesiveness with a thickness of about 5 mm and a width of about 20 mm to 30 mm is used.

  The hermetic material 12 can be bonded to the surfaces of the upper and lower flanges 1a and 1b and the web 1c of the beam 1 so as to correspond to a preset joint portion of the heat insulating material 10. However, in this case, it is difficult to change the position of the hermetic material 12 once bonded, and the accuracy of the bonding position is required. For this reason, it is preferable to make it hold | maintained with the holding member 13, and to comprise this holding member 13 corresponding to the target seam part. Thus, when the installation position is changed, the airtight material 12 held by the holding member 13 can be performed by a simple operation of changing the position of the holding member 13 itself, and the workability can be improved. It becomes.

  The holding member 13 is formed in a U shape composed of continuous surfaces of the upper and lower flanges 1a, 1b and the web 1c of the beam 1, and holds the airtight material 12 on the inner side surface (surface on the heat insulating material side) of the U shape. ing. That is, the holding member 13 has an upper flange 13a that faces the inner surface of the upper flange 1a, a lower flange 13b that faces the lower flange 1b, and a web 13c that faces the web 1c. A chamfered portion 13d is formed.

  The airtight member 12 is held on the inner surface of the holding member 13. The structure in which the holding member 13 holds the hermetic material 12 is not particularly limited, and the holding member 13 can be held by bonding or by forming a groove on the inner surface and fitting the groove.

  The airtight material 12 is bonded and held from the inner surface of the holding member 13 to the small openings of the flanges 13a and 13b. Therefore, at the joint portion of the heat insulating material 10, the heat insulating material 10 does not directly contact the holding member 13, but always comes into contact with the airtight material 12. For this reason, it becomes possible to ensure highly reliable airtightness.

  The dimension between the upper and lower flanges 13a and 13b in the holding member 13 is substantially the same as or slightly smaller than the dimension between the upper and lower flanges 1a and 1b in the beam 1. 13 can be fitted into the cross-sectional space of the upper and lower flanges 1a and 1b and the web 1c in the beam 1 smoothly and without forming an excessive gap.

  The dimension in the width direction of the holding member 13 (the dimension in the direction corresponding to the longitudinal direction of the beam 1) is sufficiently larger than the width dimension of the airtight material 12, and is stable when fitted in the cross-sectional space of the beam 1. The dimensions are such that they can stand on their own. In the present embodiment, the width dimension of the holding member 13 is set to about 80 mm with respect to the hermetic material 12 having a width of about 20 mm to 30 mm. When the holding member 13 having such a size is arranged in the cross-sectional space of the beam 1, the holding member 13 can stably stand by itself and can maintain the arrangement without being bonded to any of the beams 1. .

  The material of the holding member 13 is not particularly limited, and a metal typified by aluminum or a synthetic resin can be used. In view of ease of securing the quantity and cost, it is preferably an injection-molded product made of synthetic resin. In this case, polypropylene, polystyrene, vinyl chloride or the like can be used as the material. In particular, when the holding member 13 is formed of a polystyrene foam, heat insulation can be exhibited, which is preferable.

  Next, a procedure for constructing a hermetic heat insulating structure for beams according to the present embodiment will be described. As shown in FIGS. 1 and 2, a holding member 13 holding an airtight material 12 is disposed at a position corresponding to a joint portion of the heat insulating material 10 on the outside air side surface of the target beam 1, and the upper and lower flanges 1 a, It fits in the cross-sectional space which consists of 1b and web 1c. At this time, the holding member 13 does not need to be particularly bonded to the beam 1 and may simply be fitted.

  Next, the heat insulating material 10 is disposed. At this time, the hole 10d formed in the heat insulating material 10 is opposed to the hole 1f formed in the web 1c of the beam 1, and the flange portion 10a is opposed to the flange edge 1d, 1e of the upper and lower flanges 1a, 1b. The flange portion 10a is brought into contact with the flange mouths 1d and 1e. At this time, the positional relationship between the end portion of the heat insulating material 10 and the airtight material 12 held by the holding member 13 is confirmed, and when the positions of both are shifted, the arrangement position of the holding member 13 is shifted. It adjusts so that the airtight material 12 may oppose the edge part of the heat insulating material 10. FIG.

  Next, the biasing member 11 is passed through the hole 10d of the heat insulating material 10, and the hook 11e is passed through the hole 1f formed in the web 1c of the beam 1 by passing the engaging portion 11b of the penetrating biasing member 11 through the hole 1f. Lock to the edge of the. At this time, a force in the direction of the web 1c acts on the heat insulating material 10 so that the flange portion 10a comes into pressure contact with the flange openings 1d and 1e, and the contact surface 10c comes into pressure contact with the airtight material 12.

  As a result, in the cross-sectional space formed by the upper and lower flanges 1a, 1b and the web 1c of the beam 1, the heat insulating material 10 is brought into pressure contact with the respective flange small openings 1d, 1e to exhibit airtightness, and the end portion of the heat insulating material 10 is held by the holding member 13. The airtight material 12 held in contact with the airtight material 12 is brought into pressure contact and exhibits airtightness. That is, the cross-sectional space corresponding to the length of the heat insulating material 10 in the beam 1 is configured as a rectangular parallelepiped airtight space including the heat insulating material 10, the flanges 1a and 1b, the web 1c, the airtight material 12, and the holding member 13. The outside air side exhibits heat insulating properties by the heat insulating material 10.

  Next, another example of the urging member will be described with reference to FIG. The urging member 21 shown in the figure includes a penetrating part 21a penetrating the heat insulating material 10, a locking part 21b formed on one side of the penetrating part 21a, and an urging part 21c formed on the other side of the penetrating part 21a. And have. The penetrating portion 21a has a cross section formed by a penetrating piece 21d and a restricting piece 21e. When the penetrating portion 21a penetrates the heat insulating material 10 and the tip of the restricting piece 21e contacts or approaches the web 1c of the beam 1, the penetrating portion 21a is attached. The force portion 21c is configured to transmit a force sufficient to press the flange portion 10a against the flange small openings 1d and 1e of the beam 1 from the urging portion 21c.

  The locking portion 21b includes a sharp through protrusion 21f formed at the tip of the through piece 21d and a pair of engaging pieces 21h formed continuously with the through protrusion 21f. In particular, the locking piece 21h is formed in a cantilever shape, and a gap between the locking piece 21h and the regulating piece 21e is formed to have a dimension substantially equal to the thickness of the web 1c of the beam 1.

  The urging portion 21c is formed in a disk shape having a sufficiently large diameter. The diameter of the urging portion 21c is not particularly limited, and exhibits a strength that can sufficiently resist the force acting when the urging member 21 is locked in the hole 1f formed in the web 1c of the beam 1. Any value can be obtained.

  In the urging member 21 configured as described above, since the through protrusion 21f is formed sharply like the tip of the ridge, the notch 10d formed in the heat insulating material 10 is not a hole having a width. Even if it is a simple cut having no width, it is possible to easily penetrate the heat insulating material 10 by inserting the penetrating protrusion 21f while rotating the biasing member 21.

  For this reason, an airtight packing is attached to the surface of the urging portion 21c on the side of the penetrating portion 21a in advance, and the penetrating projection 21f is inserted into and pushed into the approximate center of the notch 10d formed in the heat insulating material 10. After being pushed into the heat insulating material 10 and pushing the locking piece 21e to the heat insulating material 10 and then pushing straight, the penetrating protrusion 21f and the locking piece 21h penetrate the heat insulating material 10 and continue to be formed on the web 1c of the beam 1. It passes through the formed hole 1f.

  When the locking portion 21b of the urging member 21 passes through the hole 1f, the free end of the locking piece 21h is locked to the web 1c around the hole 1f, and the regulating piece 21e constituting the penetrating portion 21a is formed on the web 1c. The web 1c is sandwiched in the thickness direction by the restricting piece 21e and the locking piece 21h by contacting or approaching the surface on which the heat insulating material 10 is disposed. In this state, a force is transmitted from the urging portion 21c to the heat insulating material 10, and the flange portion 10a of the heat insulating material 10 is pressed against the flange small openings 1d and 1e of the beam 1 by this force.

  As shown in FIG. 1, as described above, the outer circumferential side beam 1 is hermetically insulated on the outside air side, and the outer wall panel 2 is further installed on the outside air side of the beam 1 to achieve high hermeticity and heat insulation. It is possible to realize an airtight and heat insulating outer wall structure.

  The hermetic heat insulating structure of a beam according to the present invention mechanically attaches the heat insulating material to the beam using an urging member, so that the reliability over time is high, and it is advantageous for use in a building used for a long time.

It is a figure explaining the structure of the airtight heat insulation outer wall structure while explaining the airtight heat insulation structure of the beam arrange | positioned in the outer periphery. It is an expanded view explaining the airtight heat insulation structure of a beam. It is a front view of a heat insulating material. It is a side view of a heat insulating material. It is a figure explaining the structure of a biasing member. It is a figure explaining the structure of an airtight material and a holding member. It is a figure explaining the structure of the other example of a biasing member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Beam 1a Upper flange 1b Lower flange 1c Web 1d, 1e Flange edge 1f Hole 2 Outer wall panel 10 Heat insulating material 10a Gutter part 10b Fitting part 10c Contact surface 10d Cut 11 Energizing member 11a Through part 11b Engagement part 11c Energizing Part 11d Locking piece 11e Hook 12 Airtight material 13 Holding member 13a Upper flange 13b Lower flange 13c Web 13d Corner chamfered part 21 Energizing member 21a Through part 21b Engaging part 21c Energizing part 21d Through piece 21e Restricting piece 21f Through protrusion 21h Locking piece

Claims (6)

An airtight heat insulation structure for airtightness and heat insulation on one side of a steel beam having upper and lower flanges and a web, and the flange of the beam formed in an end portion of the upper and lower flanges, which is fitted in a cross-sectional space composed of the upper and lower flanges of the beam and the web A heat-insulating material having a long airtightness having a flange covering the forehead and a fitting portion fitted between the upper and lower flanges of the beam formed between the flanges, and the heat-insulating material attached to the heat-insulating material An urging member that penetrates in a direction perpendicular to the web and whose tip is locked in a hole formed in the web of the beam and urges the heat insulating material toward the web, and the heat insulating material faces the beam The flange portion is covered with the flange and the fitting portion is fitted between the upper and lower flanges so that the urging member penetrates in the direction perpendicular to the web of the heat insulating material and the tip of the urging member is engaged with the hole of the web. Decline by stopping Airtight insulation structure of the beam, characterized in that the flange portion of the timber and is pressed against the respective flanges small beams to hold the airtightness. An airtight material having a planar shape and elasticity corresponding to a joint portion in the length direction of the heat insulating material is disposed between the beams, and the heat insulating material is opposed to the airtight material and pressed against the airtight material. Item 2. An airtight heat insulating structure for a beam according to item 1. When the airtight material having a planar shape and elasticity corresponding to the joint portion in the length direction of the heat insulating material is arranged, a holding member having a shape corresponding to the shape of the upper and lower flanges of the beam and the web is interposed. An airtight heat insulating structure for a beam according to claim 2. The thickness of the fitting portion of the heat insulating material is a value capable of being in pressure contact with the airtight material or the airtight material and the holding member when the heat insulating material is pressed against the beam. Hermetic heat insulation structure of the described beam. The notch or attachment hole for penetrating a biasing member is formed in the position facing the hole formed in the web of the beam of heat insulating material, It described in any one of Claim 2 thru | or 4 characterized by the above-mentioned. Airtight insulation structure of beams. An airtight heat insulating outer wall structure employing the airtight heat insulating structure for a beam according to any one of claims 1 to 5, wherein the heat insulating material is provided on a surface on the outdoor side of the beam. Exterior wall structure.

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